AP CSP Unit 7 Review

What will be printed to the console after this program runs?

var numbers = [2, 5, 3, 1, 6]

function changeNums(numList, addNum, subtractNum){

for(var i=0; i<numList.length; i++){

if(numList[i] % 3 == 0){

numList[i] = numList[i] + addNum;

} else {

numList[i] = numList[i] - subtractNum;

}

}

}

changeNums(numbers, 3, 2);

console.log(numbers);

• [2, 5, 3, 1, 6]

• [0, 3, 6, -1, 9]

• [-1, 2, 6, -2, 8]

• [5, 2, 6, 3, 9]

This function checks if a number is prime. If it contains another factor besides 1 and itself, it returns false. Otherwise, it returns true.

Where should return true; be written in the code?

• OPTION A

• OPTION B

• OPTION C

• OPTION D

Which call of the function correctly follows the instructions laid out in the API?

• moveElement("button1", 2, 23);

• moveElement("button1", "left", "thirty");

• moveElement("button1", 30, "two");

• moveElement("button1", "down", 25);

Parameters are different than arguments

• True

• False

What will print to the console after running this code segment?

• 15

• 16

• 21

• 18

Which of the following procedures would be most useful as part of a program to determine whether a word appears in two different text files?

• A procedure getWords, which takes a positive integer n and a text file as input and returns the first n words in the text file.

• A procedure textMatch, which takes two text files as input and returns true if the two text files are identical.

• A procedure isFound, which takes a word and a text file as input and returns true if the word appears in the text file

• A procedure sameSize, which takes two text files as input and returns true if the two text files contain the same number of words.

A computer science student completes a program and asks a classmate for feedback. The classmate suggests rewriting some of the code to include more procedural abstraction.

Which of the following is NOT a benefit of procedural abstraction?

• Making the code run faster

• Making the code more readable

• Providing more opportunities for code reuse

• Reducing the amount of duplicated code

Consider the attached procedures.

What is displayed as a result of the procedure call

proc2("birthday", "to you")?

• birthday happy to you

• to you happy birthday

• to you birthday happy

• birthday happy birthday

What is the parameter?

• hasVowel

• str

• lower

• true

• false

What is the name of the function?

• hasVowel

• str

• lower

• true

• false